1926] 



BURT THELEPHORACEAE OF NORTH AMERICA. -XV 239 



Missouri: near St. Louis, L. 0. Overholts, 3167 (in Mo. Bot. Gard. 



Herb., 5711). 

 Idaho: Priest River, J. R. Weir, 23804, type (in Weir Herb.), and 



23387, type of C. areolatum (in Weir Herb.). 

 British Columbia: Sidney, J. Macoun, 33 (in Mo. Bot. Gard. 



Herb., 6767). 

 Washington: Seattle, W. A. Murrill, 131, comm. by N. Y. Bot. 



Gard. Herb, (in Mo. Bot. Gard. Herb., 55742). 

 Mexico: Jalapa, W.A.&E.L. Murrill, 123, comm. by N. Y. Bot. 



Gard. Herb, (in Mo. Bot. Gard. Herb., 10748). 



49. C. subceraceum Burt, n. sp. 



Type: in Burt Herb. 



Fructifications broadly effused, adnate, membranaceous, sep- 

 arable when moist, tawny to hazel in the herbarium, even or % 

 with some small obtuse granules, waxy, not cracking, the margin 

 somewhat fimbriate, whitish;. in section 200-300(1 thick, not 

 colored, 2-layered, the layer next to the substratum thick, com- 

 posed of loosely arranged, suberect hyaline hyphae not incrusted, 

 not nodose-septate, mostly 4-43^ n in diameter but with a few 

 up to 6 \k, the hymenial layer dense, thin, undulating; no gloeo- 

 cystidia; spores hyaline, even, 4 4J^ X 2-23^ \*.. 



Fructifications 3-8 cm. long, 1-3 cm. wide. 



On wood and bark of fallen frondose limbs, rarely on pine. 

 July to October. Pennsylvania to Alabama and westward to 

 Illinois. Infrequent. 



C. subceraceum resembles in general aspect C. ceraceum but has 

 small spores. This species should be compared with Grandinia 

 mucida when the problem of the latter is being solved; the only 

 European specimen of G. mucida which I have studied was shared 

 with me by Bresadola and is distinct, having aspect of the illus- 

 tration in Fries, Icones Hym., pi. 195, f. 3. 



Specimens examined: 

 Pennsylvania: Trexlertown, W. Herbst, 76, type, and an un- 

 numbered specimen, both received under the name Corticium 



laeve of Herbst, Fung. Fl. Lehigh Valley. 

 Maryland: Takoma Park, C. L. Shear, 1275. 

 District of Columbia: W. A. Murrill, 1U6 (in N. Y. Bot. Gard. 



Herb., and Mo. Bot. Gard. Herb., 61491). 



